Compilare: main.cpp: In function 'int main()': main.cpp:17:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<s.size(); i++) ~^~~~~~~~~ main.cpp:23:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(st<=dr && dr<s.size()) ~~^~~~~~~~~ main.cpp:11:13: warning: unused variable 'j' [-Wunused-variable] int n,i,j,k; ^ main.cpp:57:16: warning: 'lj' may be used uninitialized in this function [-Wmaybe-uninitialized] for(i=li; i<=lj; i++) ~^~~~ main.cpp:16:17: warning: 'li' may be used uninitialized in this function [-Wmaybe-uninitialized] int maxx=-1,li,lj; ^~